Arid
DOI10.1016/j.aeolia.2013.07.002
Spatial variability of multi-controlled aeolian supersurfaces in central-erg and marine-erg-margin systems
Pedro Rodriguez-Lopez, Juan1; Melendez, Nieves1,2; de Boer, Poppe L.3; Soria, Ana R.4; Liesa, Carlos L.4,5
通讯作者Pedro Rodriguez-Lopez, Juan
来源期刊AEOLIAN RESEARCH
ISSN1875-9637
EISSN2212-1684
出版年2013
卷号11页码:141-154
英文摘要

During the Albian Iberia was under the influence of the Northern-Hemisphere Hot Arid Belt favouring the development of an extensive sandy desert system with a marine-erg margin where prograding aeolian dunes interacted with Tethyan waters. The interplay of different controls, such as synsedimentary tectonics, compaction of the underlying coal-bearing unit, eustatic sea-level variations, climate modulation, and the autodynamics of the different sedimentary subenvironments determined the character of bounding surfaces, which separate four erg sequences. These bounding surfaces, or supersurfaces, may display a different sedimentary expression in adjacent areas. Bounding surface 1 is a sand-drift surface (SDS) in the central-erg and a transgressive surface (TS) in the marine erg margin. Bounding surface 2 is associated with a basin re-configuration associated to active extension tectonics, followed by deflation. Bounding surface 3 marks the end of erg expansion, the start of its partial destruction and redeposition and reworking in restricted marine environments. Bounding surface 4 marks the return to more arid conditions and draa progradation into Tethyan waters. These bounding surfaces separate four erg sequences. On the basis of the relative role of allocyclic processes, two megasequences are defined. The first comprises erg sequences 1-3, and the second megasequence comprises erg sequence 4. Erg megasequence 1 developed while synsedimentary tectonic activity and substrate (peat) compaction were active. Erg megasequence 2 was mainly modulated by climate (change). A nomenclature for supersurfaces is proposed based on the types of external control. (C) 2013 Elsevier B.V. All rights reserved.


英文关键词Aeolian sandstones Supersurfaces Erg sequences Subsidence Tectonics Transgression
类型Article
语种英语
国家Spain ; Netherlands
收录类别SCI-E
WOS记录号WOS:000328524000014
WOS关键词BOUNDING SURFACES ; EASTERN SPAIN ; NORTHWEST-TERRITORIES ; ESCUCHA FORMATION ; OLIETE SUBBASIN ; FLUVIAL SYSTEM ; ETJO FORMATION ; NEUQUEN BASIN ; PLAYA CYCLES ; DUNE SANDS
WOS类目Geography, Physical
WOS研究方向Physical Geography
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/175512
作者单位1.Grp Anal Cuencas Sedimentarias UCM CAM, Dept Estratig, Fac Ciencias Geol, Madrid 28040, Spain;
2.CSIC, Inst Geociencias, Madrid, Spain;
3.Univ Utrecht, Dept Earth Sci, Sedimentol Grp, NL-3584 CD Utrecht, Netherlands;
4.Univ Zaragoza, Fac Ciencias, Dept Ciencias Tierra, Grp Anal Cuencas Continent, E-50009 Zaragoza, Spain;
5.Univ Zaragoza, Fac Ciencias, Dept Ciencias Tierra, Grp Geotransfer, E-50009 Zaragoza, Spain
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GB/T 7714
Pedro Rodriguez-Lopez, Juan,Melendez, Nieves,de Boer, Poppe L.,et al. Spatial variability of multi-controlled aeolian supersurfaces in central-erg and marine-erg-margin systems[J],2013,11:141-154.
APA Pedro Rodriguez-Lopez, Juan,Melendez, Nieves,de Boer, Poppe L.,Soria, Ana R.,&Liesa, Carlos L..(2013).Spatial variability of multi-controlled aeolian supersurfaces in central-erg and marine-erg-margin systems.AEOLIAN RESEARCH,11,141-154.
MLA Pedro Rodriguez-Lopez, Juan,et al."Spatial variability of multi-controlled aeolian supersurfaces in central-erg and marine-erg-margin systems".AEOLIAN RESEARCH 11(2013):141-154.
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